If you want to have a tailored solution for your grid-connected house, input your monthly electricity bill below and the calculator will suggest you the best solution. The list of appliances shows you approximiately what you can run off the system. You can choose between three different battery solutions depending on your budget and needs.
A solar photovoltaic system consists of solar panels that generate DC electricity when the sun is out. They generate more electricity when they are directly facing the sun and when there are no clouds or shadows blocking. In order to transform the DC electricity into usable AC electricity an inverter is needed. The solar panels and the inverter need to have a high enough power rating so that they can power the needed appliances. During morning, evening and night time, when there is no sun, a battery is needed to store the electricity to power appliances. It’s important that the solar panels generate enough electricity for the daily and nightly needs so the excess electricity can be stored in the batteries.
First of all is the daily energy demand determined by looking at electricity bills, appliances power rating and their usage, or by logging the actual electricity consumption. The next step is to look at the solar insulation statics for a specific region and calculate how many solar panels are needed to generate that daily energy demand. The inverter is dimensioned after the peak power, meaning all of the appliances being used at the same time and at full effect. If batteries' are required, the usable capacity should simply reflect the energy demand during mornings, evenings and nights.
For small residential systems the installation time is seldom longer than 3 weeks. Larger industrial or utility projects could span over 6 months depending on the size, available area and specific requirements.